* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Helvetica, "PingFang SC", "Microsoft Yahei", sans-serif;
}
html,
body {
  max-width: 100%;
  overflow-x: hidden;
}
img {
  width: 100%;
}
a {
  text-decoration: none;
}
i {
  font-style: normal;
}
li {
  list-style: none;
}
input {
  outline: none;
}
.icon {
  width: 1em;
  height: 1em;
  vertical-align: -0.15em;
  fill: currentColor;
  overflow: hidden;
}
